/**
 * 加密
 * */
 layui.define((exports) => {
	let sdEncrypt = {
		sha1(value) {
		    let hexcase = 0;
		    function hex_sha1(s) {
		        return binb2hex(core_sha1(AlignSHA1(s)));
		    }
		    function core_sha1(blockArray) {
		        let x = blockArray; // append padding
		        let w = Array(80);
		        let a = 1732584193;
		        let b = -271733879;
		        let c = -1732584194;
		        let d = 271733878;
		        let e = -1009589776;
		        for (let i = 0; i < x.length; i += 16) {
		            let olda = a;
		            let oldb = b;
		            let oldc = c;
		            let oldd = d;
		            let olde = e;
		            for (let j = 0; j < 80; j++) {
		                if (j < 16){
		                    w[j] = x[i + j];
		                } else{
		                    w[j] = rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);
		                }
		                let t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)), safe_add(safe_add(e, w[j]), sha1_kt(j)));
		                e = d;
		                d = c;
		                c = rol(b, 30);
		                b = a;
		                a = t;
		            }
		            a = safe_add(a, olda);
		            b = safe_add(b, oldb);
		            c = safe_add(c, oldc);
		            d = safe_add(d, oldd);
		            e = safe_add(e, olde);
		        }
		        return new Array(a, b, c, d, e);
		    }
		    function sha1_ft(t, b, c, d) {
		        if (t < 20)
		            return (b & c) | ((~b) & d);
		        if (t < 40)
		            return b ^ c ^ d;
		        if (t < 60)
		            return (b & c) | (b & d) | (c & d);
		        return b ^ c ^ d; // t<80
		    }
		    function sha1_kt(t) {
		        return (t < 20) ? 1518500249 : (t < 40) ? 1859775393 : (t < 60) ? -1894007588 : -899497514;
		    }
		    function safe_add(x, y) {
		        let lsw = (x & 0xFFFF) + (y & 0xFFFF);
		        let msw = (x >> 16) + (y >> 16) + (lsw >> 16);
		        return (msw << 16) | (lsw & 0xFFFF);
		    }
		    function rol(num, cnt) {
		        return (num << cnt) | (num >>> (32 - cnt));
		    }
		    function AlignSHA1(str) {
		        let nblk = ((str.length + 8) >> 6) + 1,
		            blks = new Array(nblk * 16);
		        for (let i = 0; i < nblk * 16; i++)
		            blks[i] = 0;
		        for (i = 0; i < str.length; i++)
		            blks[i >> 2] |= str.charCodeAt(i) << (24 - (i & 3) * 8);
		        blks[i >> 2] |= 0x80 << (24 - (i & 3) * 8);
		        blks[nblk * 16 - 1] = str.length * 8;
		        return blks;
		    }
		    function binb2hex(binarray) {
		        let hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
		        let str = "";
		        for (let i = 0; i < binarray.length * 4; i++) {
		            str += hex_tab.charAt((binarray[i >> 2] >> ((3 - i % 4) * 8 + 4)) & 0xF) +
		                hex_tab.charAt((binarray[i >> 2] >> ((3 - i % 4) * 8)) & 0xF);
		        }
		        return str;
		    }
		    return hex_sha1(value);
		}
	}
 	
 	exports('sdEncrypt', sdEncrypt);
 })
 